Mr. Kile had a 90 percent blockage in two of three coronary arteries supplying the heart, along with a blood clot. The Coroner's office in Cook County, Illinois says that likely triggered a fatal irregular heartbeat. He ruled out illegal drugs as a contributing factor, although there was evidence of previous use.

The baseball pitcher was found dead in the team's Chicago hotel on June 22. He had failed to report to Wrigley Field for a game against the Chicago Cubs.